Elektron Musical Instruments

I'm thinking of getting an ata case for my stuff.  I can get a 4214w
ata case.  I'll be flying with it.  I was wondering if I could put
different things in one of these.  Is there a certain ammount of space
one should have between instruments?  Are there spaces in these cases
to protect the different instruments from each other?  Is there a
better place to ask these questions?  I figured out I could fit my
machinedrum an indigo 2 and my mixer in one case.  

Any case tips would be helpful.